Returns the complex sine of its argument.
    This function is supported on OpenVMS Integrity servers and
    Alpha only.
    Format
      #include  <complex.h>
      double complex csin  (double complex z);
      float complex csinf  (float complex z);
      long double complex csinl  (long double complex z);
1 – Argument
 z
    A complex value.
2 – Description
The csin functions compute the complex sine value of z.
3 – Return Values
    x                  The complex sine value.
    Returns the complex hyperbolic sine of its argument.
    This function is supported on OpenVMS Integrity servers and
    Alpha only.
    Format
      #include  <complex.h>
      double complex csinh  (double complex z);
      float complex csinhf  (float complex z);
      long double complex csinhl  (long double complex z);
4 – Argument
 z
    A complex value.
5 – Description
The csinh functions compute the complex hyperbolic sine of z.
6 – Return Values
x The complex hyperbolic sine value.